Bank vault



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G. O. YALE.

BANK VAULT.

No. 428,241. Patented May 20, 1890.

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BANK VAULT. No. 428.241. Patented May 20, 1890;

WITNESSESL INVENTOR m BY W wm - ATTORNEY UNITED STATES PATENT ()FFICE.

CHARLES O. YALE, OF NEW YORK, N. Y.

BANK-VAU LT.

SPECIFICATION forming part of Letters Patent No. 428,241, dated May 20,1890.

Application filed July 16, 1889. Serial No. 317,735. (No model.)

To all whom it mag concern: T

Be it known that I,CHARLES O. YALE, of the city, county, and State ofNew York, have invented certain new and useful Improvements inBurglar-Proof Bank-Vaults, whereof the following is a specification,reference being had to the annexed drawings, in which Figure 1represents the vault as seen from the front, showing a part of thesurface broken away and exhibiting the construction of the walls. Fig. 2is a horizontal transverse section showing a part of the floor-platesbroken away, exposing the metallic floor.

My invention relates to bank-vaults inclosed by metallic walls, floor,and roof of interlocking railroad-rails, outside of which on all sidesis the masonry surrounding the whole.

The improvement embodies a new system of constructing the metallicwalls, whereby the railroad-rails are protected, the power of resistanceis increased, and the cost is reduced.

In constructing the Vault according to my improvements a foundation A isprepared, as usual, and on this is laid thick drill-proof plates B ofsteel, or steel and iron welded, covering the foundation completely.These plates are bent at the corners and carried up vertically, as C.The wall D of railroad-rails, the construction of which is wellunderstood, is laid upon and against these plates with the base of therails outward, and the plates are secured to the rails as they are laidin place to form the walls, floor, and roof. -On the inside face of therails other plates E are applied, covering the floor F ofrailroad-rails, the wall D, and the ceiling, and secured to the rails,as in the case of the outer plates I C. The metallic Wall is thuscomposed of the railroad-rails laid up within an inner and an outersheathing of steel, covering and protecting the entire structure withinand without. This construction of metallic Wall is less expensive thanthat wherein the railroad-rails are sustained by angle-iron applied atthe corners and a lining of two or more thicknesses then applied to theinside. A single thickness of drill-proofplate outside the wall, withthe same inside, is superior to a number of thicknesses applied to theinside only. At the same time the angle-form sustaining-irons for thecorners are superseded, thus reducing the aggregate cost,while increasing the security. The usual mason-work G, of brick or stone andcement, is built around the metallic wall aforesaid. In practice I causea number of steel bars H to be embedded in the wall to increase thedifficulty of gaining an entrance through it, and care is taken to laythe inner course of these bars directly against the outer steelsheathing of the wall D, whereby additional protection is given to suchplates by increasing the difficulty of removing them, in case the effortto penetrate the vault should reach so far.

I claim as my invention- 1. In a bank-vault, the combination, with awall built from railroad-rails, of an out-side shell and an insidelining of steel plates for holding the rails in position and protectingthe surface thereof.

2. In a bank-vault, the combination, with 'a the outer sheathing ofsteel plates, as set forth.

In testimony whereof I have hereunto set my hand this 29th day of June,1889.

. CHARLES O. YALE.

In presence of- JAMES M. TULLY. JOHN W. WATERS.

